N → same as saltworks
The value engineering methods are used in the remoulding of Huludao General Chemical Plant saltern crane after researches, analysis and demonstrations.
本文利用价值工程方法，通过调研、分析、论证，对葫芦岛化工总厂的盐场吊车进行了改造。
The method can be used for curing the industrial waste gypsums, such as phosphogypsum, desulfurization gypsum, yellow gypsum, saltern gypsum and salt gypsum and the like.
该方法可以用于磷石膏、脱硫石膏、黄石膏、盐田石膏和盐石膏等化工废石膏的固化。
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